Whether a site can be crawled, rendered, indexed and served fast enough to compete. A precondition rather than a tactic: a page outside the index cannot rank or be cited.
Technical SEO covers whether a site can be crawled, rendered, indexed and served quickly enough to compete. It is a precondition rather than a ranking tactic: content a crawler cannot reach or a renderer cannot resolve never enters the index, and a page outside the index cannot rank or be cited.
Discovery through internal links and sitemaps. Crawling, bounded by crawl budget and robots.txt rules. Rendering, which decides whether JavaScript-dependent content exists as far as the indexer is concerned. Indexing, subject to duplicate handling and the canonical tag. Serving, measured by Core Web Vitals. Each stage drops pages, and working out which stage dropped a given page is most of the job.
A second population of clients now fetches pages: AI crawlers building training corpora, and content fetchers that run at request time to answer a live query. They follow their own robots.txt tokens, and most execute little or no JavaScript, so content a browser assembles client-side can be invisible to them while remaining fine for Google. Structured data and clean, extractable HTML raise the odds that a fetched page yields a usable grounding snippet.
